#305EB4#305EB4

#305EB4 is a mid, vivid blue. Relative luminance 0.119; OKLCH L 49.7% C 0.146 H 261.6°. Best body text is #FFFFFF at 6.20:1 contrast (WCAG AA passes).

Color values

HEX	#305EB4
RGB	rgb(48, 94, 180)
HSL	hsl(219, 58%, 45%)
HSV	hsv(219, 73%, 71%)
CMYK	cmyk(73.3%, 47.8%, 0%, 29.4%)
CIE-LAB	lab(41.10, 14.47, -50.26)
CIE-LCH	lch(41.10, 52.31, 286.06°)
OKLab	oklab(49.7% -0.0214 -0.1442)
OKLCH	oklch(49.7% 0.146 261.6)
XYZ	xyz(13.4569, 11.9276, 44.7642)
Luminance	0.1193 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#305EB4 #B48630

analogous

#30A0B4 #305EB4 #4430B4

triadic

#305EB4 #B4305E #5EB430

tetradic

#305EB4 #B430A0 #B48630 #30B444

square

#305EB4 #B430A0 #B48630 #30B444

split-complementary

#305EB4 #B44430 #A0B430

monochromatic

#162C53 #234584 #305EB4 #517DD1 #81A1DD

Accessibility & contrast

On white

6.20

#305EB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.39

#305EB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #305EB4

6.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##305EB4	#FFFFFF	#000000	##FFFFFF
##305EB4	1.00	6.20	3.39	6.20
#FFFFFF	6.20	1.00	21.00	1.00
#000000	3.39	21.00	1.00	21.00
##FFFFFF	6.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F67B7

Deuteranopia (green-blind)

#0A5BB2

Tritanopia (blue-blind)

#007280

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #305eb4;
/* rgb */ color: rgb(48, 94, 180);
/* oklch */ color: oklch(49.7% 0.146 261.6);

Tailwind

colors: {
  custom: {
    50: '#7a8bcb',
    500: '#305eb4',
    950: '#000000',
  },
}

SCSS

$custom: #305eb4;
$custom-light: #7a8bcb;
$custom-dark: #000000;

JSON

{
  "hex": "#305eb4",
  "rgb": {
    "r": 48,
    "g": 94,
    "b": 180
  },
  "hsl": {
    "h": 219.091,
    "s": 57.895,
    "l": 44.706
  },
  "oklch": {
    "l": 0.49702,
    "c": 0.14579,
    "h": 261.6
  },
  "luminance": 0.11929
}

Semantic roles & 50–950 ramp

primary

#305EB4

secondary

#C6AC79

accent

#AB47E1

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #305EB4

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →